649789572 has 24 divisors (see below), whose sum is σ = 1605362976. Its totient is φ = 203855488.

The previous prime is 649789513. The next prime is 649789601. The reversal of 649789572 is 275987946.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1592418 + ... + 1592825.

It is an arithmetic number, because the mean of its divisors is an integer number (66890124).

Almost surely, 2^649789572 is an apocalyptic number.

It is an amenable number.

649789572 is an abundant number, since it is smaller than the sum of its proper divisors (955573404).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

649789572 is a wasteful number, since it uses less digits than its factorization.

649789572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3185267 (or 3185265 counting only the distinct ones).

The product of its digits is 7620480, while the sum is 57.

The square root of 649789572 is about 25490.9704013009. The cubic root of 649789572 is about 866.1456178351.

It can be divided in two parts, 6497 and 89572, that added together give a palindrome (96069).

The spelling of 649789572 in words is "six hundred forty-nine million, seven hundred eighty-nine thousand, five hundred seventy-two".